ARM: dts: msm: enable qsync along with VRR in shima target

This change enables qsync support for shima target along
with exisiting VRR. The required concurrency changes
are already included in the commit 30b1dd33 ("disp:
msm: sde: support qsync and vrr in same atomic commit").

Change-Id: I699334dc999857a8938bcb84d2ac4ca1386252c2